Automatic lubricating apparatus.



M. S. BEATON, J. EASON & J. H. WILSON.

AUTOMATIC LUBRIGATING APPARATUS.

APPLIOATION FILED SEPT.24,1910.

1,040,491 Patented Oct. 8, 1912.

UNITED sra'rns PATENT onnrcn.

MALCOLM STEWART BEATON, JAMES EASON, AND JOHN HAWTHORNE WILSON, 0F

GERMISTON, TRANSVAAL.

AUTOMATIC LUBRIGATING APPARATUS.

Specification of Letters Patent.

Patented Oct. 8,1912.

Application filed September 24, 1910. Serial No. 583,588.

To all whom it may concern Be it known that we, MALCOLM STEWART BEATON,JAMES EAsoN, and JOHN I-IAw- THORNE lVILsoN, of Germiston, Transvaal,all British subjects, have invented certain new and useful Improvementsin Automatic Lubricating Apparatus, of which the following is aspecification.

The present invention relates to self contained lubricating apparatus ofthe kind comprising an oil vessel furnished with a single oil dischargeorifice, solely by means of which the interior of the vessel is put intocommunication with a region of fluctuating fluid pressure; such orificebeing controlled by a valve opening inwardly to the oil vessel andserving, when seated, completely to close the orifice. In the operationof such devices the fluctuating pressure of the fluid under the valvecauses such fluid to surge in and out of the valve-controlled orificewhereby it carries successive small quantities of the oil with it;

The purpose of the present invention is to provide a self containedlubricator of the kind referred to which will operate in practically anyposition without adjustment according to its position, and is thusparticularly applicable for use with rock drilling machines and similarapparatus subject to extreme change of position when at work.

To this end the invention consists in plac ing the valve-controlledorifice in the base of the oil vessel and affording communication fromabove the valve seat and the interior of the vessel by two holes, one ofwhich opens directly to the adjacent part v of the oil chamber, and theother being extended, as by means of a pipe, to open at the distant partof the oil vessel.

In the accompanying drawings: Figure I is a sectional view of thedevice; and Fig. II shows the same in position on a rock drillingmachine.

1 indicates a base to which a hood 2 is screwed to form the oil chamber3. The hood 2 is provided with a filling cap 1. The base 1 is formedsuitably for fixing the device to the machine, usually by providing itwith a screw stem 5. From the end of the stem 5 a small hole 6 passes upto a valve seat 7 above which is formed a valve chamber 8. A valve 9 isfree to move in said chamber to and from its seat. The valve is retainedwithin the valve chamber and the latter closed by means of a screw cap10. A light spring 11 is interposed between the cap and the valve toinsure the latter coming to its seat. By adjusting the cap 10 into orout of the base, the tension of the spring may be varied and thus thelift of the valve and the rate of discharge of oil may be controlled.

The end of the valve adjacent to the seat is cut away to form a clearspace above the valve seat and from this space two holes 12 and 13 arecarried up to open into the oil chamber 3. It is found that the bestresults are obtained by making these holes of different diameters. Oneof the holes 6. g. 13, terminates at the top of the base, well towardone side of the chamber, while the other 12, is extended, as by means ofpipe 17 to open near to the other end and toward the opposite side ofthe chamber.

The device is fixed to a convenient part of the machine so that hole 6opens into aspace containing fluid, the pressure of which fluctuates.Thus, it may advantageously be fixed into the T piece 14, Fig. II, whichconnects the supply hose 15 to the valve chest 16. At this point thepressure of the fluid rises and falls rapidly owing to the distributingvalve alternately closing and opening the inlet ports to the cylinder.Moreover by thus mixing the ejected oil with the ingoing fluid, themixture is carried right through the machine and thus effects thelubrication of every moving part. It will be seen that with a sufficientinitial supply of oil, at least one of the holes 12 and 13 ispractically always covered by the oil in the chamber, whatever theposition of the lubricator.

What we claim and desire to secure by Letters Patent is j A lubricatoradapted to be put into communication with a region of fluctuating fluidpressure to supply lubricant thereto, embodying an oil vessel providedwith a base, said base being formed with an orifice affording the solemeans of communication with the part to be lubricated and being alsoformed with a valve seat and valve chamber above said seat, and a springclosed valve working on said seat to control said orifice and closingoutwardly from the oil vessel, In testimony whereof we afiix oursignathere being also two holes extending sepatures in the presence oftwo witnesses. rately from said valve chamber in the imme- MALCOLMSTEWART BEATON. diate proximity of the valve seat to the JAMES EASON.-5interior of the oil vessel one of said holes JOHN HAWTHORNE WILSON.

opening into the vessel adjacent to the base Witnesses: and the otheropening into a distant part WESLEY E. JOHN, of said vessel. W. HELMANVINCENT.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

